Split‐source inverter with adaptive control scheme‐based shunt active power filter for power quality improvement

• Published in: IET power electronics Vol. 17; no. 14; pp. 1893 - 1910
• Main Authors: Barik, Prasanta Kumar, Samal, Sarita, Gupta, Deepak Kumar, Appasani, Bhargav, Jha, Amitkumar V., Islam, Md. Minarul, Ustun, Taha Selim
• Format: Journal Article
• Language: English
• Published: Wiley 01-11-2024
• Subjects: harmonics; invertors; power filters; voltage‐source converters
• ISSN: 1755-4535; 1755-4543
• DOI: 10.1049/pel2.12746

Although single‐stage inverters are popular for simpler design they face difficulties in shoot‐through mode operation. Insufficient DC voltage regulation and complicated LC network are principal drawbacks of these topologies. A new split source inverter (SSI) can solve problems with single‐stage inverters. In this paper, SSI replaced the voltage source inverter (VSI) of a shunt active power filter (SAPF) which alleviates power quality (PQ) issues in power system. Furthermore, a VSI‐based SAPF faces challenges to maintain consistent voltage across DC‐link capacitor, exactly compensating current generation, and switching loss reduction in inverter. This study examined efficacy of two inverter‐based SAPFs considering a modified synchronous reference frame approach for generating reference current; fuzzy logic controller for regulating DC‐link voltage; and adaptive fuzzy hysteresis current controller for generating switching pulses. Ideal and non‐ideal sources were considered when running the simulations for various load circumstances. The proposed SSI‐based SAPF with an advanced control approach can eradicate source current harmonics to 0.52% and 0.45% under ideal source conditions, and 0.65% and 0.54% under non‐ideal source conditions for non‐linear loads. Similarly, the ripples in the DC‐link voltage are also reduced to 2–3 V for the ideal case and 4–5 V for non‐ideal case.
This work explored the usage of a shunt active power filter (SAPF) to alleviate power quality (PQ) issues in a power system implementing a new voltage source inverter. The proposed SAPF with a new SSI and advanced control approach can surpass existing complements in capacitor voltage regulation and harmonic suppression caused by different non‐linear loads under ideal/non‐ideal supply conditions.